What two numbers multiply to -638 and add up to -7?




Here we answer the question: "What two numbers multiply to -638 and add up to -7?"

The answer to your question is:

-29 and 22


Below we illustrate and prove that -29 and 22 multiply to -638 and add up to -7:

-29 × 22 = -638
-29 + 22 = -7

Are you asking because you are trying to figure out how to factor the following quadratic equation?

x2 - 7x - 638 = 0

If so, the solution to factor the quadratic equation above is:

(x - 29 ) (x + 22)

To summarize, since -29 and 22 multiply to -638 and add up -7, you know that the following is true:

x2 - 7x - 638 = (x - 29 ) (x + 22)


Multiply To One Number and Add Up To Another
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